Senior Manager, Security Architecture in London

At Anaplan, we are a team of innovators focused on optimizing business decision-making through our leading AI-infused scenario planning and analysis platform so our customers can outpace their competition and the market. What unites Anaplanners across teams and geographies is our collective commitment to our customers’ success and to our Winning Culture. Our customers rank among the who’s who in the Fortune 50. Coca-Cola, LinkedIn, Adobe, LVMH and Bayer are just a few of the 2,400+ global companies who rely on our best-in-class platform.

Our Winning Culture is the engine that drives our teams of innovators. We champion diversity of thought and ideas, we behave like leaders regardless of title, we are committed to achieving ambitious goals, and we love celebrating our wins – big and small. Supported by operating principles of being strategy-led, values-based and disciplined in execution, you’ll be inspired, connected, developed and rewarded here. Everything that makes you unique is welcome; join us and let’s build what’s next - together!

Role Summary: Anaplan is building a formal security architecture practice, and this role leads it. You will turn security architecture into a deliberate, reusable asset for the company: reference architectures, identity and authorisation patterns, cryptography standards, and AI guardrail designs that become the natural, low-friction path for engineering rather than a checkpoint to work around. This is a people-leadership role with deep technical scope, reporting to the Director of Product Security. As Anaplan's AI capabilities and enterprise footprint grow, consistent and well-reasoned architecture decisions matter more with every product that builds on them. You will own that surface, set the standards engineering builds against, and lead a senior team to make secure-by-design the default.

Your Impact:

• Lead the security architecture practice: define how architecture review works at Anaplan, what gets reviewed, when, by whom, and against which bar.
• Own the reusable patterns: drive security reference architectures, identity and authorisation patterns, cryptography architecture, and AI guardrail design as living standards that engineering adopts by default.
• Set security engineering principles: establish and maintain the standards that shape how the platform is built, and keep them legible and usable for engineers.
• Review the highest-risk designs: lead architecture and design reviews for major platform and AI changes, early enough to influence them.
• Partner with platform engineering: engage directly on the Hyperblock and Polaris surface and the AI product line so architecture reflects how the platform genuinely works.
• Support compliance by design: ensure security architecture meets the demands of the enterprise and regulated environments Anaplan's customers operate in.
• Codify decisions into policy-as-code: turn architecture decisions into enforceable, version-controlled guardrails wherever that reduces toil rather than adding it.
• Build and develop the team: hire, coach, calibrate, and mentor the architecture team, and hold a consistent technical bar.

Your Qualifications:

• A track record building or leading security architecture in a SaaS or cloud-first environment, with scope across multiple teams.
• Deep architecture credibility: identity and authorisation, cryptography, secure-by-design, and threat modelling at scale.
• Enough hands-on depth to challenge weak designs on their merits; this is a security leader who stays technically credible, not purely managerial.
• People-leadership judgement: hiring, coaching, calibrating a senior team, and making hard calls on performance.
• Experience aligning architecture to enterprise and regulated environments.
• A clear, non-hyped view of how AI changes the architecture surface: identity, authorisation, supply-chain integrity, and the need for guardrails.

Nice to have:

• Working familiarity with AI security standards and references such as the NIST AI RMF, ISO 42001, MITRE ATLAS, or the OWASP LLM Top 10.
• Hands-on experience with policy-as-code and turning standards into enforced controls.
• Contributions to security standards, frameworks, or industry practice.

Our Commitment to Diversity, Equity, Inclusion and Belonging (DEIB)

We believe attracting and retaining the best talent and fostering an inclusive culture strengthens our business. DEIB improves our workforce, enhances trust with our partners and customers, and drives business success. Build your career in a place where diversity, equity, inclusion and belonging aren’t just words on paper – this is what drives our innovation, it’s how we connect, and it contributes to what makes us a market leader. We believe in a hiring and working environment where all people are respected and valued, regardless of gender identity or expression, sexual orientation, religion, ethnicity, age, neurodiversity, disability status, citizenship, or any other aspect which makes people unique. We hire you for who you are, and we want you to bring your authentic self to work every day!

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